Organic Chemistry Chem. 341 is a Level 3 course for BSc. students who passed organic chemistry courses offered on level 1 and 2 whose intention is to graduate with Honors in Chemistry, Major in Chemistry. Chem. 341 helps students to fully comprehend the chemistry of many heterocyclic products, Carbohydrates, amino acids, peptides, protein and lipids in use such as drugs and food.
Units of Measurements and Stoichiometry (mole relations, chemical formula, limiting reactant, yield %, dilution of solutions, and solution stoichiometry)
Properties of gases ( gas laws , ideal gas , molecular kinetic theory , gaseous diffusion and effusion , real gases )
Thermochemistry ( first law of thermodynamics ,Enthalpy of reactions, enthalpy of combustion, enthalpy of formation, internal energy)
The chemical components of essential oils derived from leaves and flowers of Lantana camara growing in Saudi Arabia are analyzed for the first time using gas chromatography techniques (GC–MS, GC–FID, Co-GC, LRI determination, and database and literature searches) on two different stationary phase columns (polar and nonpolar). This analysis led to the identification of total 163 compounds from leaves and flowers oils. 134 compounds were identified in the oil obtained from leaves of L.
The lithiation of 2-(2,2-dimethyl-1,3-dioxolan-4-yl)ethyl diisopropylcarbamate (1) is achieved freely by sec-butyllithium in diethylether with high lk-diastereoselectivity: the bicyclic chelate complexes 3a and 3b are reacted with electrophiles to form optically active precursors 4a and 4b with >95% diastereoselectivity. In addition, tertiary diamines can undergo an external complexation in contest with the internal oxygen ligand, leading to improved stereoselectivities.
The aromaticities of azines relative to benzene have been estimated by fusion with 15,16-dimethyldihydropyrene. Chemicalshift data for the azine-fused dihydropyrenes (calculated at GIAO HF/6-31G*//B3LYP/6-31 + G*) were used to estimate thereduction in the dihydropyrene nucleus aromaticity. Choice of the saturated reference model was quite crucial in reliable estimation of aromaticity. Reference models with partial unsaturation at azine (21,23,25–32) gave better estimate of aroma-ticity than the parent dimethyldihydropyrene.
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